Refrigerated Storage - Miscellaneous

Tuesday August 27, 2019 from 15:40 to 17:00

Room: 519a

TS-231.1 Permanent magnet synchronous motors for commercial refrigeration

Bryan R. Becker, United States

Mechanical Engineering
University of Missouri-Kansas City


Permanent magnet synchronous motors for commercial refrigeration

Bryan R BECKER1, Brian A. FRICKE2.

1University of Missouri-Kansas City, Blue Springs, United States; 2Oak Ridge National Laboratory, Oak Ridge, United States


Various evaporator fan motor technologies used in commercial refrigeration are discussed. Data from a DOE-sponsored evaporator fan motor laboratory and field demonstration project are presented. Historically, shaded-pole, permanent split capacitor (PSC), and electronically commutated (EC) motors have been used as evaporator fan motors in commercial refrigeration equipment. A permanent magnet synchronous (PMS) AC motor that can directly use grid-supplied AC current without the need to rectify to DC has recently been commercialized. It was found that PMS motors consume 79% less power and draw 82% less current than shaded pole motors, and 34% less power and 49% less current than EC motors. PMS motors exhibit a power factor of 0.82, which is 40% greater than that of existing evaporator fan motors. The measured data is extrapolated to project the economic and environmental benefits from upgrading the installed base of commercial refrigeration evaporator fan motors to PMS motors.

Presentations by Bryan R. Becker

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